SLVSM70 November   2026 DP83C8522

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 DP83C8522x Device Comparison
  6. 5 Pin Configuration and Function
    1. 5.1 Pin Configuration and Functions (DP83C8522xM)
    2. 5.2 Pin Configuration and Functions (DP83C8522xRL)
    3. 5.3 Pin Configuration and Functions (DP83C8522xRF)
  7. 6 Specifications
    1. 6.1 Thermal Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Auto-Negotiation (Speed/Duplex Selection)
      2. 7.3.2  Auto-MDIX Resolution
      3. 7.3.3  Energy Efficient Ethernet
        1. 7.3.3.1 EEE Overview
        2. 7.3.3.2 EEE Negotiation
      4. 7.3.4  EEE for Legacy MACs Not Supporting 802.3az
      5. 7.3.5  Wake-on-LAN Packet Detection
        1. 7.3.5.1 Magic Packet Structure
        2. 7.3.5.2 Magic Packet Example
        3. 7.3.5.3 Wake-on-LAN Configuration and Status
      6. 7.3.6  Low-Power Modes
        1. 7.3.6.1 Active Sleep
        2. 7.3.6.2 IEEE Power-Down
        3. 7.3.6.3 Deep Power Down State
      7. 7.3.7  Clock Output
      8. 7.3.8  Media Independent Interface (MII)
      9. 7.3.9  Reduced Media Independent Interface (RMII)
      10. 7.3.10 RMII Repeater Mode
      11. 7.3.11 Serial Management Interface
        1. 7.3.11.1 Extended Register Space Access
        2. 7.3.11.2 Write Address Operation
        3. 7.3.11.3 Read Address Operation
        4. 7.3.11.4 Write (No Post Increment) Operation
        5. 7.3.11.5 Read (No Post Increment) Operation
        6. 7.3.11.6 Example Write Operation (No Post Increment)
      12. 7.3.12 100BASE-TX
        1. 7.3.12.1 100BASE-TX Transmitter
          1. 7.3.12.1.1 Code-Group Encoding and Injection
          2. 7.3.12.1.2 Scrambler
          3. 7.3.12.1.3 NRZ to NRZI Encoder
          4. 7.3.12.1.4 Binary to MLT-3 Converter
        2. 7.3.12.2 100BASE-TX Receiver
      13. 7.3.13 10BASE-Te
        1. 7.3.13.1 Squelch
        2. 7.3.13.2 Normal Link Pulse Detection and Generation
        3. 7.3.13.3 Jabber
        4. 7.3.13.4 Active Link Polarity Detection and Correction
      14. 7.3.14 Loopback Modes
        1. 7.3.14.1 Near-end Loopback
        2. 7.3.14.2 MII Loopback
        3. 7.3.14.3 PCS Loopback
        4. 7.3.14.4 Digital Loopback
        5. 7.3.14.5 Analog Loopback
        6. 7.3.14.6 Far-End (Reverse) Loopback
      15. 7.3.15 BIST Configurations
      16. 7.3.16 Cable Diagnostics
        1. 7.3.16.1 Time Domain Reflectometry (TDR)
      17. 7.3.17 LED and GPIO Configuration
    4. 7.4 DP83C8522x Configuration
      1. 7.4.1 Hardware Bootstraps Configuration
        1. 7.4.1.1 DP83C8522x Hardware Configurations
  9. 8 Register Maps
    1. 8.1 DP83C8522x Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Twisted-Pair Interface (TPI) Network Circuit
      2. 9.2.2 Transformer Recommendations
      3. 9.2.3 Capacitive DC Blocking
      4. 9.2.4 Design Requirements
        1. 9.2.4.1 Clock Requirements
          1. 9.2.4.1.1 Oscillator
          2. 9.2.4.1.2 Crystal
      5. 9.2.5 Detailed Design Procedure
        1. 9.2.5.1 MII Layout Guidelines
        2. 9.2.5.2 RMII Layout Guidelines
        3. 9.2.5.3 MDI Layout Guidelines
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 Signal Traces
        2. 9.4.1.2 Return Path
        3. 9.4.1.3 Transformer Layout
        4. 9.4.1.4 Metal Pour
        5. 9.4.1.5 PCB Layer Stacking
          1. 9.4.1.5.1 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RHB|32
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.1 Overview

The DP83C8522x is a single-port physical layer transceiver compliant to IEEE802.3 10BASE-Te and 100BASE-TX standards. The DP83C8522x is designed to meet the stringent needs of industrial fieldbus applications and offers very low latency, deterministic variation in latency (across reset, power cycle), fixed phase between XI and TX_CLK, low-power, and configuration using hardware bootstraps to achieve fast link up. The DP83C8522x supports the standard MII and RMII (Leader mode and Follower mode) for direct connection to the media access controller (MAC).

The DP83C8522xoperates from one 3.3V power supply and has an integrated LDO to provide voltage rails needed for internal blocks. The device allows I/O voltage interfaces of 3.3V or 1.8V, which in turn enables the DP83C8522x to operate as a single-supply PHY. Automatic supply configuration within the DP83C8522x allows for any combination of VDDIO supply without the need for additional configuration settings.

The DP83C8522x uses mixed-signal processing to perform equalization, data recovery, and error correction to achieve robust operation over a CAT5e twisted-pair cable length greater than 150 meters.

The integrated MAC and MDI terminations streamline the design of boards when using the DP83C8522x. All the required clock outputs are generated from one PLL with a 25MHz external crystal or oscillator input.

The DP83C8522x PHY address hardware bootstraps on non MAC interface pins to improve Signal Integrity on the MII and RMII MAC interface pins.

For pin maps of MII and RMII modes, refer to Section 5.1, Section 5.2, and Section 5.3.